diff --git a/apps/web/src/components/MessageBubble.tsx b/apps/web/src/components/MessageBubble.tsx
index 3d15bb3..66d20d7 100644
--- a/apps/web/src/components/MessageBubble.tsx
+++ b/apps/web/src/components/MessageBubble.tsx
@@ -74,6 +74,7 @@ function linkifyChildren(children: ReactNode, keyPrefix = 'l'): ReactNode {
       const grandchildren = el.props.children;
       if (grandchildren === undefined) return child;
       return cloneElement(el, {
+        key: el.key ?? `linkified-${i}`,
         children: linkifyChildren(grandchildren, `${keyPrefix}-${i}`),
       });
     }